requirements.txt

# Telegram Bot Library
python-telegram-bot[httpx]>=21.0,<22.0

# HTTPX (Core for async requests)
httpx[http2]>=0.25.0,<0.28.0

# ASGI Framework (Core)
starlette>=0.35.0,<0.38.0

# Web Scraping (HTML Parsing - Fallback 1)
beautifulsoup4>=4.11,<4.13
lxml>=4.9.0,<6.0.0

# YouTube Transcript Library (Primary method)
youtube-transcript-api>=0.6,<0.7

# Crawl4AI (New Primary Web Scraper)
crawl4ai>=0.5.0,<0.6.0
playwright>=1.40.0,<2.0.0 # Required by crawl4ai's default strategy

# Google Gemini SDK (Primary Summarizer)
google-generativeai>=0.5.0,<0.7.0

# WSGI/ASGI Servers & Adapter
gunicorn>=21.0,<23.0
uvicorn[standard]>=0.27.0,<0.30.0

# Async Utilities / Dependencies
anyio>=3.6,<5.0
asgiref>=3.5,<3.9

# Retry Logic
tenacity>=8.0,<9.0